Materials Literature
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Nonlinear optics is given increasing attention due to its wide application in the area of laser technology, optical communication and data storage technology .The growth of activities on NLO properties of nanomaterials, proposed by the agitation of understanding new science and potential hope for applications in daily…
Undoped and Mn-doped (1−x)BaTiO3–xBi(Ni1/2Ti1/2)O3 (x = 0.03–0.7) ceramics were synthesized by a conventional solid state route. X-ray diffraction patterns revealed that the crystal structure was a tetragonal perovskite at x = 0.03, a pseudo-cubic perovskite at x = 0.1 and 0.3, and mixed phases at x = 0.5–0.7. The die…
The eco-friendly synthesis of nanoparticles through various biological means helps us to explore various seaweeds for their ability to synthesize silver nanoparticles (AgNPs). It was found that aqueous silver ions when exposed to aqueous extract of Gelidiella sp. are reduced in solution, thereby leading to the formati…
Self-assembly of small molecules or macromolecules through non-covalent or covalent bonds to build up supramolecular nanostructures is a prevalent and important process in nature. While most chemists use small molecules to assemble nanostructures with physical or chemical perturbations, nature adopts enzymes to cataly…
In this paper we rigorously derive a line-tension model for plasticity as the $\Gamma$-limit of a nonlinear mesoscopic dislocation energy, without resorting to the introduction of an ad hoc cut-off radius. The $\Gamma$-limit we obtain as the length of the Burgers vector tends to zero has the same form as the $\Gamma$-…
Four rigid rod-like molecules comprised of a Ru(bpy)(3)(2+) (bpy = 2,2'-bipyridine) photosensitizer, a 9,10-anthraquinone electron acceptor, and a molecular bridge connecting the two redox partners were synthesized and investigated by optical spectroscopic and electrochemical means. An attempt was made to assess the r…
The efficient photoinduced electron transfer from a stilbene derivative incarcerated within a negatively charged organic nanocapsule to positively charged acceptors (methyl viologen and a pyridinium salt) adsorbed outside and the back electron transfer were controlled by supramolecular effects.
A novel tri-nitroDOPA terminated polymer based ligand has been developed for the stabilization of magnetite nanoparticles. The synthesis involves a process in which ethylene oxide is polymerized using a trivinyl initiator, modified with carboxylic acid using a free radical addition of mercaptoundecanoic acid, and then…
The effects of homogeneous low voltage electron beam irradiation (HLEBI) on the adhesive force of peeling (oFp) and peeling resistance energy (oEp) at each peeling probability (Pp) of laminated sheets of bio-adaptable polydimethylsiloxane (PDMS) with transparency and high strength polytetrafluoroethylene (PTFE) with s…
Submicrometer scaled spheres are realized by a laser-induced reshaping process. An irregular shaped particle absorbs the laser-energy and turns into a spherical liquid droplet dispersed in deionized water. Subsequently, the spherical liquid droplet is “frozen” by the fast cooling of the surrounding deionized water, gi…
The Cr-based tellurides are attractive material systems for fundamental studies and potential applications. Colloidal syntheses of ferromagnetic Cr(2)Te(3) and CuCr(2)Te(4) nanocrystals with uniform morphology and narrow size distribution are reported together with their detailed magnetic characterisation.
A casein assay has been developed with aggregation induced emission character of BSPOTPE, which is a derivative of tetraphenylethene (TPE). The method exhibits a wide dynamic range of detection for casein from 10 μg ml(-1) to 5000 μg ml(-1), and a good linear range from 20 μg ml(-1) to 1250 μg ml(-1). With sample-pret…
Nanoparticle doped hybrid organogels were prepared using the pseudopeptidic macrocycle 1 and CdSe/ZnS quantum dots (QDs). The new semi-solid materials show the same thermal stability and excellent optical transparency as compared to the parent organogel in the absence of the nanoparticles, but they are fluorescent due…
A hysteretic spin transition is induced in a solution assembly of a mononuclear Fe(III) amphiphilic complex which exhibits only gradual spin crossover in the solid state. The hysteretic behavior is dependent on dynamic solution assembly and removal of solvent causes reversion to the original bulk solid magnetic respon…
We report large-scale interdigitated supercapacitor chips based on pseudo-capacitive metal oxide electrodes. A novel method is presented, which provides a powerful fabrication technology of interdigitated supercapacitors operated by a pseudo-capacitive reaction. Also, we empirically develop an equation that describes…
Holographically featured SU-8 polymer surfaces exhibited anisotropic wetting by water droplets, due to liquid pinning at the edges of the top rods in 3D woodpile structures. Square nanopillar array surfaces (tip size, 30 nm) resulting from SF6 plasma treatment showed ultrahydrophobicity, with advancing and receding co…
The synthesis of strontium ferrite SrFeO(3-δ) has been explored through wet-chemistry methods in order to optimize a quick, easy and reproducible method to obtain the perovskite in pure crystalline form with a high yield. Among the three investigated synthetic paths, (i) coprecipitation of hydroxides, (ii) coprecipita…
A theoretical and experimental study of mixtures of a calamitic nematic liquid crystal and gold nanoparticles capped with mixed monolayers (alkylic + mesogenic ligands) is presented. The effect of the ligand monolayer composition and nanoparticle concentration on the solubility in the isotropic phase and on the isotro…
Visando a redução da capacidade de absorção de água de fibras ligno-celulósicas, ciclos de molhagem e secagem são usualmente utilizados na indústria de papel e celulose. Esse procedimento enrijece a estrutura polimérica das fibro-células (processo conhecido como hornificação) resultando assim em maior estabilidade dim…
Possible effects of multi-wall carbon nanotubes (MWCNTs) on immune and inflammatory responses were examined in mice. Female ICR mice were given a single intraperitoneal administration (2 mg/kg body weight) of either MWCNTs, carbon black (CB), or crocidolite (blue asbestos) and controls received a vehicle of 2% sodium…